Answer:
here.
Explanation:
17. antibiotics
18. reproduction (growth is increase in size and number)
19. cell walls (like penicillin. This mechanism is important because it will not harm the host as human cells don't have cell walls.)
20. 70S ribosomes (because this is where protein synthesis occurs in bacteria)
The esophagus has a simple but significant functions to animals who has it. These functions can be a) to swallow food and serve as a passageway to the stomach and b) may serve to release the eaten food that might have some harmful compositions or chemicals -the vomit response.
